The Committee on Armed Services exercises legislative oversight for the nation's military, including the Department of Defense, military research and development, nuclear energy activities, and benefits for members of the armed forces. It also handles the confirmation of presidential nominees for senior defense and military positions.

The Committee on Energy and Natural Resources handles matters related to energy development, conservation, regulation, nuclear energy, national parks, public lands, and natural resource management. It oversees the Department of Energy and the Department of the Interior.

The Select Committee on Intelligence provides vigilant legislative oversight of the United States Intelligence Community, ensuring activities conform to the Constitution and laws. It reviews intelligence budgets, programs, and operations, and prepares legislation authorizing appropriations for intelligence agencies.

The Committee on Veterans' Affairs handles legislation related to veterans' benefits, healthcare, housing, employment, and memorials. It provides oversight for the Department of Veterans Affairs (VA) and addresses issues affecting former service members.